EP0767060B1 - Tête de projection de liquide, cartouche de tête de projection de liquide et appareil de projection de liquide - Google Patents

Tête de projection de liquide, cartouche de tête de projection de liquide et appareil de projection de liquide Download PDF

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Publication number
EP0767060B1
EP0767060B1 EP96114748A EP96114748A EP0767060B1 EP 0767060 B1 EP0767060 B1 EP 0767060B1 EP 96114748 A EP96114748 A EP 96114748A EP 96114748 A EP96114748 A EP 96114748A EP 0767060 B1 EP0767060 B1 EP 0767060B1
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EP
European Patent Office
Prior art keywords
liquid
liquid discharging
discharging head
discharge ports
ink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP96114748A
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German (de)
English (en)
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EP0767060A3 (fr
EP0767060A2 (fr
Inventor
Hiroyuki C/O Canon K.K. Ishinaga
Hiroshi C/O Canon K.K. Sugitani
Jun C/O Canon K.K. Kawai
Masaaki Okada
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Canon Inc
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Canon Inc
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Publication of EP0767060A3 publication Critical patent/EP0767060A3/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14016—Structure of bubble jet print heads
    • B41J2/14145—Structure of the manifold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/145—Arrangement thereof
    • B41J2/15—Arrangement thereof for serial printing

Definitions

  • the present invention relates to a liquid discharging head for effecting printing by discharging printing (recording) liquid from a discharge port by means of thermal energy, and a liquid discharging apparatus utilizing such head.
  • the above-mentioned printing includes ink application onto various kinds of ink substrate capable of receiving ink, such as cloth, fiber, paper and sheet material, and the above-mentioned apparatus includes all the information processing apparatus and printers serving as the output apparatus for such information processing apparatus, and the present invention is applicable to such printing or apparatus.
  • Ink jet printing method is recently attracting attention because of its features that the noise at the printing operation can be reduced to a negligible level, that high-speed printing operation is possible and that image fixation on so-called plain paper is possible without particular treatment.
  • the ink jet printing method disclosed for example in the Japanese Patent Laid-Open Application No. 54-51837 and the German Patent Laid-Open Application (DOLS) 2843064 is different from other ink jet printing methods, in that the driving force for ink discharge is obtained by applying thermal energy to liquid.
  • the liquid effected by thermal energy undergoes a state change involving a rapid volume change, and is discharged from an orifice at the front end of a printing head, by the force generated by such state change.
  • the discharged liquid forms a flying droplet, which is deposited onto a printing material to perform recording.
  • the ink jet printing method disclosed in the above-mentioned DOLS 2843064 is not only extremely advantageously applicable to so-called drop-on-demand printing method, but also has the advantage of providing a high-quality image of a high resolving power at a high speed, since a full-line head with multiple orifices arranged at a high density can be easily realized.
  • the printing head employed in the above-mentioned ink jet printing methods is composed, as shown in Fig. 1, of an ink discharge unit including orifices (discharge ports) 206 for discharging liquid droplets, plural nozzles 204 communicating with the orifices 206, provided in a part thereof with heat action portions where the thermal energy for liquid discharge is applied to the liquid and divided by flow path walls 203, and a common liquid chamber for supplying the nozzles 204 with recording liquid, electrothermal converting members (heat generating members) 202 serving as means for generating thermal energy, and a printing head substrate 201 provided with a wiring portion 209 for supplying the heat generating members 202 with electric currents.
  • the liquid is supplied to the common liquid chamber 207 from an unrepresented liquid reservoir tank through a supply pipe 208.
  • the ink jet recording head utilizing pigment ink has been associated with the drawbacks that the ink is of a limited pot life as it tends to solidify by the coagulation of the pigment component, that the response frequency of ink discharge cannot be made high because of the high viscosity of ink, and that the time required for image fixation is extremely long because of poor permeability of such ink into the recording paper. It has been tried to overcome such drawbacks by reducing the pigment concentration or by employing a solvent of higher permeability, but such measures result in a loss in the recording density or blotting of the ink on the recording paper and are not effective sufficiently.
  • the Japanese Patent Laid-Open Application proposes an ink jet recording method of superposing the recording ink and a process liquid for improving the image quality, storage durability and liquid permeability.
  • the color ink jet recording apparatus is provided with separate drum-structured heads.
  • Document US-A-3 988 745 discloses an ink recording head having a grooved plate on which two plates having pumping elements are arranged on mutually opposite sides of the grooved plate.
  • the grooves form ink paths and capillary nozzles in a face of the grooved plate, wherein the ink paths and the capillary nozzels are partly defined by the plates having the pumping elements.
  • the faces of the plates are flush with the face of the grooved plate.
  • document GB-A-2 134 041 shows a liquid jet recording apparatus having a plurality of discharge ports arranged in at least two rows or arrays on a face surface of the recording head. Between these rows there is provided a partition member extending along the rows and projecting from the face surface. This partition member may contact a recording material and avoids the recording head to be stained by the contact with the recording medium. This partition member further intercepts the flow of air near the discharge ports, so that drops of recording liquid projecting from the discharge ports are not subjected to extraneous influence, i.e. printing is not disturbed.
  • a first object of the present invention is to provide a liquid discharging head capable of high-quality recording with a high speed, by precisely matching reaching positions of inks of different kinds or of processing liquid and ink.
  • a second object of the present invention is to provide an ink jet printing apparatus capable of mounting a liquid discharging head capable of high-quality recording with a high speed, by precisely matching the reaching positions of inks of different kinds or of processing liquid and ink.
  • liquid discharging head cartridge including the liquid discharging head mentioned above and a liquid reservoir containing ink to be supplied to the liquid discharging head.
  • liquid discharging apparatus including the liquid discharging head mentioned above and means for detachably supporting the liquid discharging head.
  • the liquid discharging head, the liquid discharging head cartridge and the liquid discharging apparatus of the present invention can provide an image of extremely high quality, firm fixation and high durability because of the absence of aberration between the reaching positions of liquids of two kinds, as the nozzles for the two liquids are integrally formed by a single grooved member.
  • the manufacturing cost of the liquid discharging head and of the entire printing apparatus can be reduced, by an integral configuration of the nozzles for the discharge of the two liquids.
  • Figs. 2A and 2B show an embodiment of the liquid discharging head (ink jet head) of the present invention, wherein Fig. 2A is a cross-sectional view showing the internal structure thereof and Fig. 2B is an elevational view showing the external structure seen from the side of an orifice face. Also Fig. 3 is a exploded perspective view showing the external structure of the ink jet head shown in Figs. 2A and 2B, seen from the side of liquid flow paths.
  • the ink jet head 1 is principally composed of a cover plate (grooved member) 2 provided with ink supply paths 13, 14 for respectively supplying nozzles 3, 4 with recording ink A and processing liquid B, plural grooves for constituting the nozzles (liquid flow paths), recesses constituting common liquid chambers 15, 16 for such liquids and orifices (discharge ports) 19, 20; and two heater boards (element boards), 7, 8 sandwiching the cover plate 2 on both faces thereof.
  • a cover plate (grooved member) 2 provided with ink supply paths 13, 14 for respectively supplying nozzles 3, 4 with recording ink A and processing liquid B, plural grooves for constituting the nozzles (liquid flow paths), recesses constituting common liquid chambers 15, 16 for such liquids and orifices (discharge ports) 19, 20; and two heater boards (element boards), 7, 8 sandwiching the cover plate 2 on both faces thereof.
  • the mutually contacting arrangement of the cover plate 2 and the heater boards (element boards) 7, 8 defines therebetween the nozzles 3, 4 and the common liquid chambers 15, 16 for respectively receiving the recording ink A and the processing liquid B from the ink supply paths 13, 14 and supplying the recording ink A and the processing liquid B to the nozzles 3, 4.
  • the heater boards 7, 8 are provided, in portions thereof facing the nozzles, with electrothermal converting elements 17, 18 serving as energy generating elements for heating the liquid to generate bubbles therein and discharging the liquids of the nozzles 3, 4 from the orifices 19, 20 by the pressure of such bubbles.
  • the heater boards 7, 8 also receive electrical energy and discharge control signals from printed circuit boards 11, 12 through wires 9, 10.
  • Such orifices 19, 20 can be prepared with a high positional precision with an error not exceeding several micrometers, since they can be simultaneously formed on the face 2a for example by laser milling or photoetching.
  • a recording head for discharging different liquids can be prepared in very compact and inexpensive manner by positioning, as explained above, the grooved member between the plural element boards provided in mutually opposed manner. Also since the grooved member is in advance provided with the discharge ports corresponding to the respective element boards, the shape and the arrangement of such discharge ports are not affected by the preparation process of the liquid flow paths, based on the mutual adhesion of the grooved member and the element board. It is therefore possible to drastically improve the accuracy of the reaching positions of the different liquids.
  • the grooved member is provided with recesses constituting the common liquid chambers, in addition to the discharge ports and the grooves for constituting the liquid flow paths corresponding to the elements of the element boards, so that the number of components can be further reduced and there can be obtained a liquid discharging head with improved performance and with a reduced cost.
  • the above-mentioned grooved member being sandwiched between the plural element boards, may be deformed by the heat transmitted therefrom in certain drive state, for example if the elements are activated without the liquid discharge.
  • Such drawback can however be avoided by positioning, as in the present invention, the base plates (heat dissipating members) 5, 6 of a material having a high thermal conductivity and a high heat dissipating effect, for example a metal such as aluminum, copper or stainless steel, outside the element boards.
  • heat dissipating members can be dispensed with if the amount of generated heat is small and the grooved member is free of fear of deformation.
  • the wires 9, 10 for electrical connection between the element boards and the circuit boards 11, 12 are positioned inside the mutually opposed base plates, so that the electrical connecting portions can be protected from the external influence.
  • Fig. 4 is a plan view showing the circuits formed on the base plates 5, 6 of the ink jet head shown in Figs. 1, 2A and 2B, in an equivalent circuit diagram.
  • FIG. 4 there are shown an input image data 301, a clock signal 302 for data transferring shift register, a latch signal 303 for latching the data of the shift register, enable signals 304 for determining the width and timing of printing pulses, electrothermal converting elements 305 serving as the energy generating elements, driving transistor 306, a power source 307, and a logic power source 308.
  • FIGS. 5A to 5D are lateral views showing an example of discharging method for the recording ink and the processing liquid by the ink jet head shown in Figs. 2A, 2B and 3.
  • the ink jet head 1 in the course of a scanning motion in a direction C discharges the processing liquid from the orifice 19 to a predetermined position on a recording sheet 29 constituting the recording medium.
  • the discharged droplet 22 of the processing liquid hits the recording sheet 29 as shown in Fig. 5B and penetrates therein, thus forming a dot 24.
  • the processing liquid has a very low surface tension not exceeding about 30 dyn/cm, in order to promptly penetrate in the recording sheet 29 thereby forming a large dot.
  • the liquid of such physical property can provide a sufficiently large dot with a liquid volume which is about a half of that of the ordinary recording ink, the nozzles are so designed to have appropriate discharging characteristics matching such physical property.
  • the ink jet head 1 continues to move in the direction C and discharges the recording ink from the orifice 20 toward the dot 24 formed on the recording sheet 29.
  • the droplet 25 of the recording ink securely lands on the dot 24 as shown in Fig. 5D to form a dot 26, in which a rapid coagulating reaction takes place by the mixing of both liquids, whereby the recording ink is securely fixed and a high-quality image can be obtained.
  • an array of the orifices 19 for the processing liquid and an array of the orifices 20 for the recording ink are formed in mutually parallel manner, with a mutual distance d.
  • the array of the orifices 19 and the array of the orifices 20 are inclined by an angle ⁇ to the moving direction C of the ink jet head 1 relative to the recording sheet, and the array of the orifices 19 is displaced, relative to the array of the orifices 20, by d ⁇ tan ⁇ along the direction of the arrays.
  • the different liquids to be employed therein are assumed to processing liquid and recording ink, but the present invention is not limited to such case and is likewise applicable to a case of employing inks of different kinds.
  • Fig. 7 is a schematic perspective view of an ink jet printing apparatus in which the ink jet printing head of the foregoing embodiment can be mounted.
  • a liquid discharging head cartridge 1101 includes the printing head of the foregoing embodiment and an ink container containing ink to be supplied thereto.
  • the head cartridge 1101 is mounted on a carriage 1107 engaging with a spiral groove 1106 of a lead screw 1105 which is rotated by a driving motor 1102 in forward and reverse directions through transmitting gears 1103, 1104, and is reciprocated in directions a and b, together with the carriage 1107, by the driving force of the motor 1102.
  • a paper support plate 1110 for a printing sheet P transported by an unrepresented printing sheet supply unit over a platen 1109, presses the printing sheet P toward the platen 1109 along the moving direction of the carriage.
  • a photocoupler 1111, 1112 constituting home position detecting means, for detecting the presence of a lever 1119 of the carriage 1107 in this area and accordingly switching the rotating direction of the driving motor.
  • a support member 1113 supports a cap member 1114 for covering a face, containing orifices 304, of the printing head 1101.
  • Ink suction means 1115 is provided for sucking ink, from the head 1101, into the interior of the cap member 1114, thereby effecting suction recovery of the head 1101 through an aperture 1016 provided in the cap member.
  • a print control unit for providing the heat generating elements in the head 1101 with the print signals and for controlling the function of the above-mentioned units is provided in the printer main body and is therefore not illustrated in the drawing.
  • the printer 1100 of the above-explained configuration effects recording, on the printing sheet P transported over the platen 1109 by the unrepresented print sheet supply unit, by reciprocating motion of the head 1101 over the entire width of the printing sheet, and, the head 1101, being capable of high-density recording, can achieve high-speed printing operation with a high precision.
  • the ink to be used is not limited to dye-based ink but may be pigment-based ink containing dispersed pigment, and the processing liquid to be used may be of a kind causing coagulation of such pigment. Further, there may be employed, in combination, different inks for example of different colors, as will be explained later. In the following there will be shown an example of pigment ink that causes coagulation upon mixing with colorless liquid. More specifically, inks of yellow, magenta, cyan and black colors Y2, M2, C2, K2, each containing a pigment and an anionic compound, can be obtained in the following manner.
  • anionic polymer P-1 styrene-methacrylic acid-ethyl acrylate, acid value 400, weight-averaged molecular weight 6,000, aqueous solution with a solid content of 20 %, neutralized with potassium hydroxide
  • the following materials were changed in a batch-type vertical sand mill (manufactured by Imex Co.) together with glass beads of a diameter of 1 mm as media, and the dispersion treatment was conducted for 3 hours under cooling with water. After the dispersion, the viscosity was 9 cps and pH was 10.0.
  • the obtained dispersion was subjected to the removal of coarse particles by a centrifuge, whereby obtained was carbon black dispersion with a weight-averaged particle size of 100 nm.
  • Composition of carbon black dispersion P-1 aqueous solution (solid content 20 %) 40 parts carbon black Mogul L (supplied by Cablac) 24 parts glycerin 15 parts ethylene glycol monobutylether 0.5 part isopropyl alcohol 3 parts water 135 parts
  • anionic polymer P-2 styrene-methacrylic acid-methyl methacrylate, acid value 280, weight-averaged molecular weight 11,000, aqueous solution with a solid content of 20 %, neutralized with diethanolamine
  • P-2 aqueous solution (solid content 20 %) 35 parts C.I.
  • pigment yellow 180 (Nova Palm Yellow PH-G supplied by Ciba-Geigy Co.) 24 parts triethyleneglycol 10 parts diethyleneglycol 10 parts ethylene glycol monobutylether 1.0 part isopropyl alcohol 0.5 part water 135 parts
  • anionic polymer P-1 employed in the preparation of the black ink K2, as dispersant, the following materials were subjected to dispersing treatment as in the case of preparation of the carbon black dispersion, whereby obtained was cyan dispersion with a weight-averaged particle size of 120 nm.
  • composition of cyan dispersion P-1 aqueous solution (solid content 20 %) 30 parts C.I. pigment blue 15:3 (Fastgen Blue FGF supplied by Dai-nippon Ink Chemical Co.) 24 parts glycerin 15 parts diethylene glycol monobutylether 0.5 part isopropyl alcohol 3 parts water 135 parts
  • anionic polymer P-1 employed in the preparation of the black ink K2, as dispersant, the following materials were subjected to dispersion-treatment as in the case of preparation of the carbon black dispersion, whereby obtained was magenta dispersion with a weight-averaged particle size of 115 nm.
  • composition of magenta dispersion P-1 aqueous solution (solid content 20 %) 20 parts C.I. pigment red 122 (supplied by Dai-Nippon Ink and Chemicals) 24 parts glycerin 15 parts isopropyl alcohol 3 parts water 135 parts
  • the processing liquid for insolubilizing the ink dye can for example be prepared in the following manner.
  • Preferred examples of ink which is insolubilized upon mixing with the above-mentioned processing liquid can be obtained in the following manner.
  • the mixing takes place in the present invention on the printing material or in a position after permeation into the printing material, and, as a first step of the reaction, the low-molecular weight component of the cationic substance or the cationic oligomer contained in the processing liquid causes association by ionic interaction with the water-soluble dye having an anionic radical, contained in the ink, or the anionic compound contained in the pigment ink, thereby causing instantaneous separation from the liquid phase.
  • the dispersion state is destroyed to generate coagulated body of pigment.
  • the above-mentioned associated body of the dye and the low-molecular cationic substance or the cationic oligomer or the coagulated body of pigment is absorbed by the high-molecular component contained in the processing liquid, whereby the associated body of dye or the coagulated body of pigment further grows in size and becomes harder to penetrate in the gaps between the fibers of the printing material.
  • the liquid part only after solid-liquid separation penetrates into the recording sheet, whereby the high print quality and the image fixation are both achieved.
  • the coagulated body formed by the low-molecular component of the cationic substance or the cationic oligomer and the anionic dye or the coagulated body of pigment, formed by the above-explained mechanism is highly viscous and does not move together with the movement of the liquid part. Consequently the adjacent ink dots, composed of inks of different colors for example in case of full-color image formation, do not mix mutually and are kept free of bleeding. Furthermore the above-mentioned coagulated or associated body is essentially insoluble in water, thus providing the formed image with satisfactory water resistance. In addition, the light fastness of the formed image is improved by the shielding effect of the polymer.
  • the present invention allows to dispense with the use of a cationic polymer of a high molecular weight or a polyvalent metal salt, which is often employed in the conventional art, or to minimize such use, since such substance is only required in supplemental manner for further enhancing the effect of the present invention.
  • the present invention can attain another advantage of avoiding the loss in the color generating ability of the dye, encountered conventionally in case such cationic polymer or polyvalent metal salt is employed for improving the water resistance.
  • plain paper such as ordinary copy paper or bond paper
  • coated paper or the transparent film for overhead projector prepared specifically for ink jet printing
  • ordinary quality paper or lustrous paper there is no particular limitation on the printing material to be employed, and so-called plain paper such as ordinary copy paper or bond paper can be advantageously employed for this purpose.
  • coated paper or the transparent film for overhead projector prepared specifically for ink jet printing, and the ordinary quality paper or lustrous paper.
  • the present invention brings about a particular advantage when applied to a recording head or a printer of a system utilizing thermal energy for ink discharge, proposed by Canon Inc., since such system can achieve a higher density and a higher definition in the recording.
  • the principle and representative configuration of such system is preferably based on the basic principle disclosed for example in the U.S. Patent Nos. 4,723,129 and 4,740,796.
  • This system is applicable to so-called on-demand recording or continuous recording, but is particularly effective in the on-demand recording because, in response to the application of at least a drive signal representing the recording information to an electrothermal converting element positioned corresponding to a liquid channel or a sheet containing liquid (ink) therein, the element generates thermal energy capable of causing a rapid temperature increase exceeding the nucleus boiling point, thereby inducing film boiling on a heat action surface of the recording head and thus forming a bubble in the liquid (ink), in one-to-one correspondence with the drive signal.
  • the liquid (ink) is discharged through a discharge port by the growth and contraction of the bubble, thereby forming at least a liquid droplet.
  • the drive signal is preferably formed as a pulse, as it realizes instantaneous grow and contraction of the bubble, thereby attaining highly responsive discharge of the liquid (ink).
  • Such pulse-shaped drive signal is preferably that disclosed in the U.S. Patent Nos. 4,463,359 and 4,345,262. Also the conditions described in the U.S. Patent No. 4,313,124 relative to the temperature increase rate of the heat action surface allows to obtain further improved recording.
  • the configuration of the recording head is given by the combinations of the liquid discharge ports, liquid channels and electrothermal converting elements with liner or rectangular liquid channels, disclosed in the above-mentioned patents, but a configuration disclosed in the U.S. Patent No. 4,459,600 also belongs to the present invention.
  • the present invention is effective in a recording head fixed to the main apparatus, or a recording head of interchangeable chip type, which can receive ink supply from the main apparatus and can be electrically connected therewith upon mounting on the main apparatus, or a recording head of cartridge type in which an ink cartridge is integrally constructed with the recording head.
  • the present invention is not limited to a single recording head corresponding to the ink of a single color, but also covers the use of plural recording heads corresponding to plural inks different in color or in density. More specifically, the present invention is not limited to a recording mode for recording a single main color such as black, but is extremely effective also to the apparatus having at least one of the recording modes with plural different color or with full color by color mixing, wherein the recording head is either integrally constructed or is composed of plural units.
  • the ink jet printing apparatus of the present invention may be formed, in addition to an image output terminal for an information processing apparatus such as a computer, as a copying apparatus in combination with an image reader or the like or as a facsimile apparatus having transmitting and receiving functions.
  • the present invention provides an ink jet recording head of a high image quality with a high printing speed, and an ink jet recording head and an ink jet printing apparatus which allow easy adjustment of the reaching position of the recording head, are featured by the reduced cost and by the image fastness, image fixation, image density and head durability.
  • a liquid discharging head for discharging liquid from discharge ports comprises first and second element boards provided in mutually opposed manner and bearing thereon a plurality of energy generating elements for generating energy for liquid discharge and a grooved member positioned between said mutually opposed first and second element boards and provided with grooves for forming liquid flow paths respectively corresponding to said energy generating elements in combination with said first element board, grooves for forming liquid flow paths respectively corresponding to said energy generating elements in combination with said second element board, and discharge ports communicating with said liquid flow paths.

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Claims (15)

  1. Tête de décharge de liquide pour décharger un liquide à partir d'orifices de décharge, comprenant :
    des première et seconde cartes (7, 8) d'éléments disposées de manière mutuellement opposée et portant plusieurs éléments (17, 18) de production d'énergie destinés à produire de l'énergie de décharge de liquide ; et
    un élément rainuré (2) placé entre lesdites première et seconde cartes (7, 8) d'éléments mutuellement opposées et pourvu de rainures destinées à former des trajets (3) d'écoulement de liquide correspondant, respectivement, auxdits éléments (17) de production d'énergie en combinaison avec ladite première carte (7) d'éléments, de rainures destinées à former des trajets (4) d'écoulement de liquide correspondant, respectivement, auxdits éléments (18) de production d'énergie en combinaison avec ladite seconde carte (8) d'éléments, et d'une partie (2a) de face comportant des orifices (19, 20) de décharge communiquant avec lesdits trajets (3, 4) d'écoulement de liquide qui se trouvent sur celle-ci, dans laquelle lesdites première et seconde cartes (7, 8) d'éléments contactent une surface de ladite partie (2a) de face opposée auxdits orifices (19, 20) de décharge, dans laquelle ladite partie (2a) de face comprend en outre une rainure (21) agencée entre les orifices (19) de décharge communiquant avec lesdits premiers trajets (3) d'écoulement de liquide et les orifices (20) de décharge communiquant avec lesdits seconds trajets (4) d'écoulement de liquide, et s'étendant dans la direction de groupement desdits orifices (19, 20) de décharge.
  2. Tête de décharge de liquide selon la revendication 1, dans laquelle les orifices de décharge correspondant à ladite première carte d'éléments sont aptes à décharger de l'encre, et dans laquelle les orifices de décharge correspondant à ladite seconde carte d'éléments sont aptes à décharger un liquide de traitement.
  3. Tête de décharge de liquide selon la revendication 1, dans laquelle ledit élément rainuré comporte une partie évidée constituant une chambre commune de liquide destinée à délivrer du liquide auxdits trajets d'écoulement de liquide, correspondant à chaque dite carte d'éléments.
  4. Tête de décharge de liquide selon la revendication 1, dans laquelle les orifices de décharge correspondant à ladite première carte d'éléments et les orifices de décharge correspondant à ladite seconde carte d'éléments sont disposés sur un même plan.
  5. Tête de décharge de liquide selon la revendication 1, dans laquelle un groupement des orifices de décharge correspondant à ladite première carte d'éléments et un groupement des orifices de décharge correspondant à ladite seconde carte d'éléments sont disposés de manière mutuellement parallèle et perpendiculairement à la direction de balayage de la tête de décharge de liquide.
  6. Tête de décharge de liquide selon la revendication 1, dans laquelle un premier groupement des orifices de décharge correspondant à ladite première carte d'éléments et un second groupement des orifices de décharge correspondant à ladite seconde carte d'éléments sont prévus de manière mutuellement parallèle et inclinés par rapport à la direction de balayage de la tête de décharge de liquide.
  7. Tête de décharge de liquide selon la revendication 6, dans laquelle, par rapport audit premier groupement des orifices de décharge, ledit second groupement des orifices de décharge est décalé, d'un pas prédéterminé, le long de la direction dudit groupement, de façon qu'une ligne imaginaire, passant par un orifice de décharge prédéterminé dudit premier groupement des orifices de décharge et s'étendant dans la direction de balayage de ladite tête, coïncide avec une ligne imaginaire passant par un orifice de décharge prédéterminé du second groupement des orifices de décharge et s'étendant dans la direction de balayage de ladite tête.
  8. Tête de décharge de liquide selon la revendication 1, dans laquelle lesdites première et seconde cartes d'éléments ont des formes différentes.
  9. Tête de décharge de liquide selon la revendication 1, dans laquelle les éléments de production d'énergie disposés sur lesdites première et seconde cartes d'éléments ont des caractéristiques différentes.
  10. Tête de décharge de liquide selon la revendication 1, dans laquelle les trajets d'écoulement de liquide disposés respectivement en correspondance avec lesdites première et seconde cartes d'éléments ont des formes différentes.
  11. Tête de décharge de liquide selon la revendication 2, dans laquelle ledit liquide de traitement contient une substance cationique constituée d'un composant de faible poids moléculaire et d'un composant de fort poids moléculaire, et dans laquelle ladite encre contient un colorant anionique.
  12. Tête de décharge de liquide selon la revendication 2, dans laquelle ledit liquide de traitement contient une substance cationique constituée d'un composant de faible poids moléculaire et d'un composant de fort poids moléculaire, et dans laquelle ladite encre contient au moins un colorant anionique et un pigment.
  13. Cartouche de tête de décharge de liquide comprenant une tête de décharge de liquide selon la revendication 1 et un conteneur de liquide destiné à contenir de l'encre à délivrer à ladite tête de décharge de liquide.
  14. Dispositif de décharge de liquide comprenant une tête de décharge de liquide selon la revendication 1 et un moyen destiné à supporter de manière amovible ladite tête de décharge de liquide.
  15. Dispositif de décharge de liquide selon la revendication 14, comprenant en outre un moyen destiné à transporter un support d'enregistrement pour réception de l'encre déchargée à partir de ladite tête de décharge de liquide, et un moyen destiné à transporter ladite tête de décharge de liquide.
EP96114748A 1995-09-14 1996-09-13 Tête de projection de liquide, cartouche de tête de projection de liquide et appareil de projection de liquide Expired - Lifetime EP0767060B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP23709795 1995-09-14
JP237097/95 1995-09-14
JP23709795 1995-09-14

Publications (3)

Publication Number Publication Date
EP0767060A2 EP0767060A2 (fr) 1997-04-09
EP0767060A3 EP0767060A3 (fr) 1997-08-20
EP0767060B1 true EP0767060B1 (fr) 2003-03-12

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EP96114748A Expired - Lifetime EP0767060B1 (fr) 1995-09-14 1996-09-13 Tête de projection de liquide, cartouche de tête de projection de liquide et appareil de projection de liquide

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Country Link
US (1) US6179412B1 (fr)
EP (1) EP0767060B1 (fr)
DE (1) DE69626588T2 (fr)

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JP2003053993A (ja) 2001-08-14 2003-02-26 Canon Inc インクジェット記録ヘッド
JP2003251910A (ja) * 2001-12-26 2003-09-09 Konica Corp 印刷物及びインクジェット記録方法
US6527368B1 (en) * 2002-04-30 2003-03-04 Hewlett-Packard Company Layer with discontinuity over fluid slot
JP2006027132A (ja) * 2004-07-16 2006-02-02 Fuji Photo Film Co Ltd 液滴吐出ヘッド及び画像形成装置
JP4726501B2 (ja) * 2005-01-21 2011-07-20 キヤノンファインテック株式会社 インクジェット記録ヘッドおよびインクジェット記録装置
JP6937129B2 (ja) * 2017-02-03 2021-09-22 エスアイアイ・プリンテック株式会社 液体噴射ヘッドおよび液体噴射装置

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Also Published As

Publication number Publication date
EP0767060A3 (fr) 1997-08-20
EP0767060A2 (fr) 1997-04-09
US6179412B1 (en) 2001-01-30
DE69626588D1 (de) 2003-04-17
DE69626588T2 (de) 2003-11-20

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